典型文献
Investigations of Thermal Deformation Based on the Monitoring System of Tianma 13.2 m VGOS Telescope
文献摘要：
The thermal expansion of radio telescopes has been recognized as a significant systematic error in Very Long Baseline Interferometry (VLBI) data analysis. Although the thermal expansion model recommended by International Earth Rotation Service (IERS) Conventions 2010 can achieve millimeter accuracy for the International VLBI Service for Geodesy and Astrometry (IVS) routine telescopes, both the International Terrestrial Reference Frame 2020 (ITRF2020) in preparation and the VLBI2010 project encourage the scientific community to reconsider its modeling. To this end, we developed a monitoring system for the Tianma 13.2 m VLBI Global Observing System (VGOS) telescope. Based on the observed data, we refined the IERS expansion model, with results showing that the accuracy of our modified model was improved by 1.9 times. It suggested that the IERS thermal expansion model can achieve the declared millimeter accuracy, and refining its modeling can meet the requirement of 0.3 mm rms stability of the VGOS antenna reference point for the VLBI2010 project.
文献关键词：
中图分类号：
作者姓名：
Shize Song;Zhongkai Zhang;Guangli Wang;Yong Zheng
作者机构：
Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China;University of Chinese Academy of Sciences,Beijing 100049,China;Information Engineering University,Zhengzhou 450000,China;Henan Industrial Technology Academy of Spatio-Temporal Big Data,Zhengzhou 450000,China
文献出处：
引用格式：
[1]Shize Song;Zhongkai Zhang;Guangli Wang;Yong Zheng-.Investigations of Thermal Deformation Based on the Monitoring System of Tianma 13.2 m VGOS Telescope)[J].天文和天体物理学研究,2022(09):35-46
A类：
Conventions,Geodesy,Astrometry,ITRF2020,VLBI2010
B类：
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AB值：
0.534553
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